Question

A8 Diamond and graphite are allotropes of carbon. Diamond has
a melting point of about 3700°C whereas graphite has a
melting point of about 3300°C.
(a) Explain what is meant by the term allotropes
(b) Explain why both diamond and graphite have very high
melting points.
(c) Explain why diamond does not conduct electricity
whereas graphite does.
(d) Why is graphite used in pencils?​

Answer 1

Answer:

Explanation:

Diamond and graphite are both pure carbon. They are both macromolecules.

Diamond and graphite, both are macromolecules and contains only carbon. Both are the allotropes of carbon.

Graphite is a good conductor of electricity thus used as an electrode.

Diamond is a bad conductor of electricity thus not used as an electrode.

Both Diamond and Graphite have a covalent bond.

Graphite has a melting point similar to that of diamond of around 3600°C, at which point it sublimes rather than melting.